Resilient coupling



July 19, 1932. RUEGG 1,867,987

RESILIENT COUPLING Filed July 20, 1928 Patented July 19, 1932 UNITED STATES PATENT oFFlc-E CLEMENT BUEGG, O1! mwaum, WISOONSIN, ASSIGNOB TO NOBIOBERO IHG COMPANY, 01' WISCONSIN, A CORPORATION 'OF WISCONSIN COUPLHTG Application filed m 20, igas. Serial Io. 294,302.

This invention relates to fielding couplings, and particularly to coup gs intended for use between two substantially alined shafts and arranged to cushion the drive in 5 both rotary directions.

7 While not restricted in utility to that field,

the invention is peculiarly adapted to use in driving engine governors, to relieve the governor of the eflect of minor cyclic speed 10 changes of the engine, both accelerative and decelerative. In this class of service it is essential that failure of the resilient element of the yielding drive shall not destroy the drive to the governor, since stoppage of the 1 5 governor while the engine is in motion, would grobably cause the engine to wreck itself.

pecial means are provided to ensure maintenance of the drive connection upon failure of the resilient element of the coupling.

The preferred embodiment of the inven tion as included in a governor drive for a Diesel engine is illustrated in the accompanying drawing, in which,-

Fig. 1 is a vertical section of'a governor drive. v 4 V Fig. 2 is a section on the line 22 of Fig. 1 on an enlarged scale. r

Fig. 3 is a perspective view of the two coupling members separated to show the con-- struction.

In Fig. 1 an ordinary overhead cam shaft is shown at 6. This is driven from the crank shaft (not shown) by a vertical shaft 7 and spiral gears 8. and 9. The gearcasing is 5 shown at 11 and the governor frame at 12. The governor shaft 13 turns in bearings 14 in frame 12 andis axially alined with shaft 7.

The gear 8 is fixed to shaft 7 by means of 0 six bolts which pass through the gear and a flange 15 on the upper Three of these bolts, one of which appears at 16, pass only through the flange and gear.

The other three, one of which appears at 17,

5 pass through the flange and ar fnd also on the lower end of the tubular hub 19 0 lower coupling element.

The hub 19 carries at its upper .end a disc or circular plate 21 havinfila pteripheral flan the no 22. The lower end of 13 carries t e end of shaft 7.'

through a corresponding one 0 three In 18 other coupling element, which includes a hub- 23 fixed on the shaft by key 24 and set screw 25, a dlsc or circular plate portion 26, and a the discs 21 and 26 which houses the spring.

This spring is shown at 28 and extends in an arc of some 300 approximately concentric with the axis of rotation. It is connected by a pin 29 with disc 21, the circular pin acting as a ournal in the circular eyeformed in one end of spring 28. The other end of the spring 28 is formed with a dovetail enlargement 31 which closely fits in a slot formed in'flange 27 to receive. it.

If spring 28 should fail the encircles pm 29 would collide with the end portion adjacent 31. However to provide for the. remote contingency 0 failure by shear across the dovetail 31, a stop pin 32 is fixed in disc 26. This will prevent relative rotation of the parts even in the complete absence. of the spring.

The invention is applicable to other'uses than overnor drives and may be variously embo ied accordin to attendant circumstances and the pre erences of the designer.

What is claimed is,

1. A resilient coupling comdprising concentric rotary elements an a su stantially concentric arcuate sprin subtendingi an angle less than 360, rigi y connecte ad'acent one end to one element and pivoted two ad acent the other end directly to the other element on an axis parallel with the axis of the rotary elements.

2. A resilient coupling comprising two concentric rotary elements and a substantially concentric arcuate spring, subtending an angle less than 360, rigid y connected adjacent one end to one element and pivoted adjacent the other end directly to the other element-on an axis parallel with the axis of the rotary elements; and means for positively limiting the relative angular displacement of said elements.

3. A resilient coupling comprising two concentric rotary elements and a substantially concentric arcuate spring, subtending an angle less than 360,

rigidly connected adpart which jicent one end toone element and ivoted adjacent the other end to the other e ement andmeaiis coacting with a portion of said spring to limit the relative angular displace= ment of said elements;

4. A resilient coupling comprising two, concentric rotary elements having mter-enflan es; and an arcuate rin ,subn diii g an in le less than 360, iigidfy connected with the flan e of one element and pivoted to the other e ement. z

5. A resilient coupling comprlsmg two concentric rotary rigidly connected with the flange of one element and pivoted to the other element; and means adapted to engage an end of said P ment of said elements.

6. A resilient coupling comprislng two concentric rotary elements having inter-en- 'gagmg concentric flanges which house a space I I d between said elements; and an arcuate spring within said space having one end fixedly engaged in a recess in the flange of one member, and the other end pivoted to the other member within said flanges.

7. A resilient coupling comprising two concentric rotary elements having inter-engaging concentric flanges which house a space between said elements; an arcuate spring within said space having one end fixedly engaged in a reces in the flange of one member, and the other end pivoted to the other member within said flanges; and

a lug on the first member in the path of the pivot on the second member and serving to limit relative angular displacement.

8. A resilient coupling comprising two concentric rotary elements;- a substantially concentric arcuate spring connecting saidmembers and deformable to permit relative displacement of said members in both angular directions; and means coacting with a portion of said spring to limit positively such. displacements.

9. The combination with a drive shaft and a governor shaft alined therewith, of a yielding connection between the two comprising tions; and means coacting with the ends of the spring to limit positively such displacean arcuate spring substantially concentric with said shafts and deformable to permit relative displacement in both angular direcments.

In testimony. whereof I have signed my:

name to this. specification.

4 CLEMENT RUEGG.'

elements having inter-en gaging concentric flanges; an arcuate spring g to limit the relative angular 'displace- I 

